1318990974 has 32 divisors (see below), whose sum is σ = 3016455936. Its totient is φ = 376652160.

The previous prime is 1318990957. The next prime is 1318990993. The reversal of 1318990974 is 4790998131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82134 + ... + 96870.

It is an arithmetic number, because the mean of its divisors is an integer number (94264248).

Almost surely, 2^1318990974 is an apocalyptic number.

1318990974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1318990974 is an abundant number, since it is smaller than the sum of its proper divisors (1697464962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1318990974 is a wasteful number, since it uses less digits than its factorization.

1318990974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16880.

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 1318990974 is about 36317.9153311420. The cubic root of 1318990974 is about 1096.6817285076.

The spelling of 1318990974 in words is "one billion, three hundred eighteen million, nine hundred ninety thousand, nine hundred seventy-four".